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How can I count the number of matches for a regex?
...tches
When counting matches of aa in aaaa the above snippet will give you 2.
aaaa
aa
aa
To get 3 matches, i.e. this behavior:
aaaa
aa
aa
aa
You have to search for a match at index <start of last match> + 1 as follows:
String hello = "aaaa";
Pattern pattern = Pattern.compile("aa");...
How to change Android Studio's editor font?
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142
All you have to do is click the "Save As" button to create a new profile. You can't change the f...
使用App Inventor扩展实现多点触控：Scale Detector · App Inventor 2 中文网
...助”->“伴侣信息”以下载该伴侣。 当你切换回普通的AI2服务器时，你需要重新安装普通的伴侣。
你可以使用扩展测试服务器按照下面第 2 部分中的描述实施 ScaleDetector.aix 扩展。
请记住，扩展机制仍然不稳定并且正在开发...
Is there any pythonic way to combine two dicts (adding values for keys that appear in both)?
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842
Use collections.Counter:
>>> from collections import Counter
>>> A = Counter(...
How can I represent an infinite number in Python?
...d out, x is also infinity or "nan" ("not a number").
Additionally (Python 2.x ONLY), in a comparison to Ellipsis, float(inf) is lesser, e.g:
float('inf') < Ellipsis
would return true.
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PostgreSQL error: Fatal: role “username” does not exist
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edited Jun 6 at 22:57
answered Aug 12 '12 at 4:13
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How do you do a simple “chmod +x” from within python?
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201
Use os.stat() to get the current permissions, use | to or the bits together, and use os.chmod(...
Using Case/Switch and GetType to determine the object [duplicate]
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answered Apr 2 '09 at 9:10
Anton GogolevAnton Gogolev
105k3636 gold badges187187 silver badges274274 bronze badges
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Regex: match everything but specific pattern
...fic pattern (specifically index.php and what follows, like index.php?id=2342343 )
7 Answers
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Using IQueryable with Linq
...Products table, and you want to get all of the products whose cost is >$25.
If you do:
IEnumerable<Product> products = myORM.GetProducts();
var productsOver25 = products.Where(p => p.Cost >= 25.00);
What happens here, is the database loads all of the products, and passes them ac...